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Chapters 3

Solids, Liquids, and Gases

QuestionAnswer
solid has a definite shape and a definite volume
crystalline solid solids that are made up of particles with regular repeating patterns
amorphous solid solid whose particles are not arranged in a repeating pattern
liquid has a definite volume but no shape of its own
fluid a substance that flows
surface tension the result of an inward pull among the molecules of a liquid that brings the molecules on the surface closer together
viscosity a liquid’s resistance to flow
gas has an indefinite shape and an indefinite volume
melting the change in state from a solid to a liquid
melting point the temperature at which a substance melts
freezing the change in state from liquid to solid
vaporization the change from a liquid to a gas
evaporation vaporization that only takes place on the surface of the liquid
boiling occurs when a liquid changes to a gas
boiling point the temperature at which a liquid boils
condensation when vapor collects and cools and turns into a liquid
sublimation when a solid skips the liquid phase and goes directly into the gas phase
pressure the force of the outward push divided by the area of the walls of the container
Boyle's Law when the pressure of a gas at constant temperature is increased, the volume of the gas increases
Charles' Law when the temperature of a gas is increased at constant pressure, its volume increases
graph a diagram that tells how two variables are related
origin the point (0,0) on a line graph
directly proportional a term used to describe the relationship between two variables whose graph is a straight line passing through the point (0,0)
very inversely a term used to describe the relationship between two variables whose graph forms a curve that slopes downward
Created by: KerriReynolds
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